Platform cart



FIG. 1 is a top, right perspective view of a platform cart showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines shown in the figures are included for the purpose of illustrating portions of the platform cart and form no part of the claimed design. 

CLAIM The ornamental design for a platform cart, as shown and described. 